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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - DC DC Switching Regulators

Monolithic Power Systems Inc. MP2314GJ-Z

Name: MP2314GJ-Z
Brand: Monolithic Power Systems Inc.
SKU: MP2314GJ-Z
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MP2314GJ-Z

Manufacturer:: Monolithic Power Systems Inc.

Category:: Voltage Regulators - DC DC Switching Regulators

Package:: SOT-23-8 Thin, TSOT-23-8

Datasheet:: MP2314GJ-Z.pdf

Description:: IC REG BUCK ADJ 2A TSOT23-8

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Product details

Overview

MP2314GJ-Z from Monolithic Power Systems is a synchronous step-down DC/DC converter IC with integrated 120mΩ high-side and 50mΩ low-side MOSFETs, delivering 2A continuous output current across 4.5V–24V input range, fixed 500kHz switching frequency, and adjustable 0.8V–VIN output voltage - deployed in notebook I/O power rails and flat-panel display bias supplies.

For engineers reviewing the MP2314GJ-Z datasheet, MP2314GJ-Z pinout, MP2314GJ-Z application, or MP2314GJ-Z equivalent, key selection criteria include AAM light-load efficiency mode, thermal shutdown at 150°C, EN/SYNC dual-function pin for enable control or external clock synchronization (200kHz–2MHz), and TSOT23-8 package constraints for compact PCB layout.

Technical Context

The MP2314GJ-Z employs peak-current-mode control with internal 0.791V feedback reference and optimized compensation to ensure stable regulation under line/load transients. Its AAM (Advanced Asynchronous Modulation) logic dynamically disables pulse skipping when V_COMP exceeds VAAM, enabling seamless transition between PFM and CCM modes.

Bootstrap gate drive uses an internal floating regulator with UVLO (2.2V rising threshold, 150mV hysteresis) and supports optional external BST diode for >65% duty-cycle applications. Under-voltage lockout triggers at 3.9V VIN rising threshold with 650mV hysteresis, and hiccup-mode OCP activates when FB drops below 50% of reference during sustained overload.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	4.5V to 24V - supports 12V/19V/24V industrial and consumer input rails without external pre-regulation.
Output Current	2A continuous - sustains full load at ambient temperatures up to +125°C with proper PCB copper area.
Switching Frequency	Fixed 500kHz (±120kHz) - enables compact magnetics; externally synchronizable from 200kHz to 2MHz via EN/SYNC pin.
Feedback Reference	0.791V ±12mV (–40°C to +85°C) - sets output voltage accuracy; used with resistor divider for 0.8V–VIN adjustment.
HS/LS R_DS(on)	120mΩ / 50mΩ - minimizes conduction loss at 2A, enabling >92% efficiency at 12V_IN/5V_OUT.
Quiescent Current	130–240μA - ensures low standby power in battery-backed systems during light-load AAM operation.
Thermal Shutdown	150°C junction temperature - protects die during overload; 20°C hysteresis ensures reliable restart at ≤130°C.

Pinout & Package

MP2314GJ-Z is housed in an 8-pin TSOT23 package (2.9mm × 1.6mm × 0.85mm), optimized for high-density layouts with exposed thermal pad (connected to GND). Pin 1 is marked by dot; pin numbering follows standard TSOT23-8 top-view orientation.

Pin/Terminal	Circuit Role	Design Meaning
1 AAM	AAM Mode Control	Resistor-to-GND sets AAM threshold; floating or tied to VCC disables AAM and forces CCM operation.
2 IN	Main Input Supply	Accepts 4.5V–24V; requires local 22μF ceramic decoupling capacitor with low ESR.
3 SW	Switch Node	Drives external inductor; connects to BST via bootstrap network; must use wide PCB trace to minimize ringing.
4 GND	Power Ground Reference	System ground return for output regulation; requires direct low-impedance connection to thermal pad and input/output caps.
5 BST	Bootstrap Supply	Charged via SW–BST capacitor/resistor; powers high-side driver; clamped to VSW+6V absolute max.
6 EN/SYNC	Enable & Clock Input	Digital enable (1.2–1.6V threshold); also accepts external 200kHz–2MHz clock for frequency synchronization.
7 VCC	Bias Regulator Output	Internal 5V regulator (4.65–5.15V); decoupled with 0.1–0.22μF ceramic cap; powers internal circuitry.
8 FB	Feedback Input	Monitors output via resistor divider; 10–50nA input bias current enables high-value resistors for low quiescent loss.

Key Features

Feature	Design Value
AAM Light-Load Efficiency Mode	Reduces switching frequency under light loads via programmable VAAM threshold, improving efficiency at <100mA while maintaining stability.
Integrated Power MOSFETs	120mΩ HS + 50mΩ LS switches eliminate external FETs and drivers, reducing BOM count and layout complexity.
Internal Soft-Start	1.5ms typical ramp time prevents output overshoot during startup into pre-biased loads without external components.
Hiccup-Mode Overcurrent Protection	Enters periodic restart on sustained short-circuit, limiting average fault current and die temperature rise.
Robust Thermal Management	TSOT23-8 package achieves θ_JA = 100°C/W on 4-layer board; thermal shutdown + hysteresis prevents latch-up.

Applications

Notebook I/O Power Rail

Digital Set-Top Box Core Logic

Use Scenario: Powers USB controller, PCIe switch, and SATA PHY in ultrabook platforms with 19V adapter input.

IC Role / Device Role / Timing Role: Primary 5V/3.3V buck regulator delivering regulated rail with <10mV ripple and fast transient response to burst I/O activity.

Use Value: AAM mode extends battery runtime during idle; 500kHz switching allows 6.5μH inductor size compatible with thin-profile chassis.

Use Scenario: Supplies 1.2V core voltage to ARM-based SoC in cable/satellite STB with 12V DC input.

IC Role / Device Role / Timing Role: Secondary buck stage following front-end AC/DC; regulates tightly-toleranced core rail with ±1% output accuracy.

Use Value: Internal 0.791V reference and optimized compensation enable stable regulation with minimal external components, reducing BOM cost.

Flat Panel Display Bias Supply

Industrial Human-Machine Interface

Use Scenario: Generates 2.5V and 1.8V rails for LVDS transmitter and timing controller in 24-inch LCD monitor.

IC Role / Device Role / Timing Role: Dual-output implementation using two MP2314GJ-Z units; synchronized switching reduces EMI in noise-sensitive video signal paths.

Use Value: EN/SYNC pin enables inter-device clock synchronization, suppressing beat frequencies and easing EMC compliance testing.

Use Scenario: Powers microcontroller, CAN transceiver, and sensor interface in factory-floor HMI panel with 24V industrial bus input.

IC Role / Device Role / Timing Role: Main 5V system rail generator; withstands 28V transient surges per absolute max rating and operates down to –40°C.

Use Value: Wide 4.5V–24V input range eliminates need for upstream pre-regulator; thermal shutdown ensures reliability in unventilated enclosures.

Equivalent & Alternatives

The following parts are listed as comparable options for similar synchronous step-down converter applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MP2392GQ-P	Successor device with 3A output, 700kHz f_SW, lower R_DS(on) (85mΩ/35mΩ), and enhanced thermal performance in QFN-10 package.	Supports higher current and denser thermal environments; not pin-compatible due to different package and pinout.	Select MP2392GQ-P for new designs requiring >2A or improved efficiency above 1A load; MP2314GJ-Z remains valid for legacy 2A space-constrained layouts.
TPS562211RHLR	Texas Instruments part with 2A rating, 4.5–18V input, 500kHz f_SW, but no AAM mode and requires external compensation.	Lacks light-load efficiency optimization; demands additional loop compensation components and larger solution size.	Choose TPS562211RHLR only if TI ecosystem alignment or specific qualification requirements override AAM and integration advantages.

Compared with MP2392GQ-P, MP2314GJ-Z offers proven TSOT23-8 integration for ultra-compact footprints but lacks higher current headroom; versus TPS562211RHLR, it delivers superior light-load efficiency and simpler design-in at the cost of single-supplier dependency.

Availability

MP2314GJ-Z is available at Aetrix Electronics and suitable for notebook I/O power, digital set-top box core logic, and flat panel display bias supplies requiring stable component supply across extended production lifecycles.

Supply support for MP2314GJ-Z includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Monolithic Power Systems (MPS) is a fabless semiconductor company specializing in high-performance analog and power ICs, with design centers in the US, China, and Taiwan, and global manufacturing partnerships.

The MP2314 belongs to MPS's high-efficiency synchronous buck converter product line, engineered for space-constrained consumer and industrial applications where integration, thermal robustness, and light-load efficiency are critical.

FAQ

What is the recommended input capacitor for MP2314GJ-Z?

A 22μF X5R/X7R ceramic capacitor placed close to the IN and GND pins is recommended. It must handle RMS current ≥1A (half the 2A load) and exhibit low ESR to suppress input ripple. A 0.1μF ceramic capacitor in parallel improves high-frequency decoupling.

Can MP2314GJ-Z operate with a 3.3V input?

No. The absolute minimum input voltage is 4.5V per datasheet specifications, and the under-voltage lockout rising threshold is 3.9V. Operation below 4.5V violates recommended operating conditions and risks unstable regulation or shutdown.

How does the AAM mode affect output voltage ripple?

AAM mode increases low-frequency ripple (tens of kHz) due to pulse-skipping behavior under light loads, but maintains tight DC regulation. Ripple magnitude depends on AAM threshold setting and output capacitor ESR; ceramic caps minimize this effect.

Is an external bootstrap diode required for MP2314GJ-Z?

Not required, but recommended when V_OUT = 3.3V or 5V and duty cycle exceeds 65% (i.e., V_IN > 7.7V for 3.3V out). An IN4148 diode from VCC to BST improves bootstrap capacitor recharge efficiency and reduces thermal stress.

What is the maximum allowable output voltage for MP2314GJ-Z?

The maximum output voltage is limited by the input voltage: V_OUT ≤ V_IN × D_MAX, where D_MAX = 95%. For 24V input, maximum practical V_OUT is ~22.8V. However, the FB reference is fixed at 0.791V, so higher outputs require proportionally scaled resistor dividers.

Does MP2314GJ-Z support pre-biased output startup?

Yes. The device features monotonic pre-bias startup: if the output is already biased before enable, the BST capacitor refreshes and soft-start initiates only after sensed FB voltage falls below the rising soft-start threshold, preventing reverse current flow.

What PCB layout practices are critical for MP2314GJ-Z stability?

Minimize SW and GND loop area; place input capacitor within 5mm of IN/GND pins; route FB traces away from noisy nodes; connect thermal pad directly to GND plane with ≥4 vias; keep BST capacitor adjacent to BST/SW pins with short traces.

MP2314GJ-Z Specifications

Product attributes: Attribute value

Manufacturer:: Monolithic Power Systems Inc.

Series:: -

Package/Case:: SOT-23-8 Thin, TSOT-23-8

Packaging:: Tape & Reel (TR)

Product Status:: Not For New Designs

Function:: Step-Down

Output Configuration:: Positive

Topology:: Buck

Output Type:: Adjustable

Number of Outputs:: 1

Voltage - Input (Min):: 4.5V

Voltage - Input (Max):: 24V

Voltage - Output (Min/Fixed):: 0.8V

Voltage - Output (Max):: 22.8V

Current - Output:: 2A

Frequency - Switching:: 500kHz

Synchronous Rectifier:: Yes

Operating Temperature:: -40°C ~ 125°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: TSOT-23-8

MP2314GJ-Z FAQ

1.How can I place an order for MP2314GJ-Z through Aetrix?

Please submit a Request for Quotation (RFQ) for MP2314GJ-Z on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for MP2314GJ-Z reliable?

The price and inventory of MP2314GJ-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP2314GJ-Z is usually 5 days.

3.What payment methods are accepted for MP2314GJ-Z?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP2314GJ-Z transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MP2314GJ-Z?

MP2314GJ-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MP2314GJ-Z order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for MP2314GJ-Z?

For technical support, including MP2314GJ-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP2314GJ-Z requirements.

6.How does Aetrix verify that MP2314GJ-Z is sourced from the original manufacturer or authorized distributors?

All MP2314GJ-Z products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MP2314GJ-Z meets industry standards.

7.What is the process for return or replacement of MP2314GJ-Z?

All MP2314GJ-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP2314GJ-Z, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The MP2314GJ-Z part is unused and in its original packaging.

Return procedure for MP2314GJ-Z:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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